package com.itheima.utils;

import com.aliyun.oss.ClientBuilderConfiguration;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.common.auth.CredentialsProviderFactory;
import com.aliyun.oss.common.auth.EnvironmentVariableCredentialsProvider;
import com.aliyun.oss.common.comm.SignVersion;
import org.springframework.stereotype.Component;

import java.io.ByteArrayInputStream;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

@Component
public class AliyunOSSOperator {


    public String upload(byte[] content, String originalFilename) throws Exception {
       String endpoint = "https://oss-cn-beijing.aliyuncs.com";
       String bucketName = "zhanglinjie";
       String region = "cn-beijing";

        // 从环境变量中获取访问凭证。运行本代码示例之前，请先配置环境变量
        EnvironmentVariableCredentialsProvider credentialsProvider =
                CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();

        // 创建OSSClient实例。
        // 当OSSClient实例不再使用时，调用shutdown方法以释放资源。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        // 显式声明使用 V4 签名算法
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
        OSS ossClient = OSSClientBuilder.create()
                .endpoint(endpoint)
                .credentialsProvider(credentialsProvider)
                .region(region)
                .build();

        // 2. 上传文件
        String path = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy/MM/dd"));
        String objectName = path + "/" + originalFilename;
        ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(content));
        //文件访间http://zhanglinjie.oss-cn-beijing.aliyuncs.com/2025/06/28/1.jpg
        return endpoint.split("//")[0] + "//" + bucketName + "." + endpoint.split("//")[1] + "/" + objectName;
    }


}
